In Series Four, Simon Baker returns as Patrick Jane, a consultant for the California Bureau of Investigation, known as CBI, solving the most complicated homicides in the state, and as the man who shot and killed Red John, the serial killer who murdered his wife and daughter. Unless, of course, that the man who shot Patrick is someone else.With respect to Mentalist, the truth is often elusive. And now, with a new boss, new and complicated cases, and Red John always present, unconventional Patrick will have, more than ever, you need to make use of their skills of observation, manipulation and irresistible charm to cope with system that so often gets in the way of truth.